curs_overlay(3X)curs_overlay(3X)NAME
overlay, overwrite, copywin - overlay and manipulate overlapped curses windows
SYNOPSIS
#include <curses.h>
int overlay(const WINDOW *srcwin, WINDOW *dstwin);
int overwrite(const WINDOW *srcwin, WINDOW *dstwin);
int copywin(const WINDOW *srcwin, WINDOW *dstwin, int sminrow,
int smincol, int dminrow, int dmincol, int dmaxrow,
int dmaxcol, int overlay);
DESCRIPTION
The overlay and overwrite routines overlay srcwin on top of dstwin. scrwin and dstwin are not required to be the same size; only text
where the two windows overlap is copied. The difference is that overlay is non-destructive (blanks are not copied) whereas overwrite is
destructive.
The copywin routine provides a finer granularity of control over the overlay and overwrite routines. As in the prefresh routine, a rectan-
gle is specified in the destination window, (dminrow, dmincol) and (dmaxrow, dmaxcol), and the upper-left-corner coordinates of the source
window, (sminrow, smincol). If the argument overlay is true, then copying is non-destructive, as in overlay.
RETURN VALUE
Routines that return an integer return ERR upon failure, and OK (SVr4 only specifies "an integer value other than ERR") upon successful
completion.
X/Open defines no error conditions. In this implementation, copywin, overlay and overwrite return an error if either of the window point-
ers are null, or if some part of the window would be placed off-screen.
NOTES
Note that overlay and overwrite may be macros.
PORTABILITY
The XSI Curses standard, Issue 4 describes these functions (adding the const qualifiers). It further specifies their behavior in the pres-
ence of characters with multibyte renditions (not yet supported in this implementation).
SEE ALSO curses(3X), curs_pad(3X), curs_refresh(3X)curs_overlay(3X)
Check Out this Related Man Page
curs_overlay(3X)curs_overlay(3X)NAME
overlay, overwrite, copywin - overlay and manipulate overlapped curses windows
SYNOPSIS
#include <curses.h>
int overlay(const WINDOW *srcwin, WINDOW *dstwin);
int overwrite(const WINDOW *srcwin, WINDOW *dstwin);
int copywin(WINDOW *srcwin, WINDOW *dstwin, int sminrow,
int smincol, int dminrow, int dmincol, int dmaxrow,
int dmaxcol, int overlay);
DESCRIPTION
The overlay and overwrite routines overlay srcwin on top of dstwin. scrwin and dstwin are not required to be the same size; only text
where the two windows overlap is copied. The difference is that overlay is non-destructive (blanks are not copied) whereas overwrite is
destructive.
The copywin routine provides a finer granularity of control over the overlay and overwrite routines. Like in the prefresh routine, a rec-
tangle is specified in the destination window, (dminrow, dmincol) and (dmaxrow, dmaxcol), and the upper-left-corner coordinates of the
source window, (sminrow, smincol). If the argument overlay is true, then copying is non-destructive, as in overlay.
RETURN VALUE
Routines that return an integer return ERR upon failure, and OK (SVr4 only specifies "an integer value other than ERR") upon successful
completion.
NOTES
Note that overlay and overwrite may be macros.
PORTABILITY
The XSI Curses standard, Issue 4 describes these functions (adding the const qualifiers). It further specifies their behavior in the pres-
ence of characters with multibyte renditions (not yet supported in this implementation).
SEE ALSO curses(3X), curs_pad(3X), curs_refresh(3X)curs_overlay(3X)
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